/**********************************************************************************
***
***    Screencasting Teaching System C++ Library
***    Copyright (C) 2011  Jiri Novak <jiri.novak@petriny.net>
***                        Wadi Jalil Maluf <wadijm@gmail.com>
***
***    This file is part of the Screencasting Teaching System C++ Library.
***
***    This library is free software; you can redistribute it and/or modify
***    it under the terms of the GNU General Public License as published by
***   the Free Software Foundation; either version 3 of the License, or
***    (at your option) any later version.
***
***    This library is distributed in the hope that it will be useful,
***    but WITHOUT ANY WARRANTY; without even the implied warranty of
***    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
***   GNU General Public License for more details.
***
***    You should have received a copy of the GNU General Public License
***    along with this library; if not, write to the Free Software
***    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
***
*********************************************************************************/

#ifndef SCREENCASTSERVICE_H_
#define SCREENCASTSERVICE_H_
#include <map>
#include <list>
#include "../common/model/user.h"
#include "../common/comm/mutex.h"
#include "../common/comm/lock.h"
#include "../common/comm/blockingqueue.h"
#include "../common/comm/operation.h"
#include "safemap.h"

/*
 * ScreencastService.h
 *  Clase responsable de transmitir en broadcast datos de los screencasts para aquellos usuarios logueados.
 *  Created on: 06/06/2011
 *      Author: wadi
 */

class ScreencastService
{
public:
  ScreencastService();
  virtual
  ~ScreencastService();
  /**
   * Registra a un usuario logeado como disponible para poder empezar a recibir mensajes en broadcast.
   * @param user: usuario a registrar
   * @param queue: cola intermediaria del SocketMsgSender asociado al usuario
   */
  void registerLoggedUser(User* user,BlockingQueue* queue);
  /**
   * Envia en broadcast la operación pasada por parámetro a casa instructor y estudiante
   * asociado a la lección.
   * @param lesson: Leccion actual
   * @oaram op: operacion a enviar
   */
  void broadcast(Lesson& lesson,Operation & op);
  /**
     * Envia en broadcast la operación pasada por parámetro a casa los estudiantes de la lección pasada por parametro
     * asociado a la lección.
     * @param lesson: Leccion actual
     * @oaram op: operacion a enviar
     */
  void broadcastStudents(Lesson& lesson,Operation & op);
  /**
       * Remueve al usuario como recurso a estar disponible para enviarle datos
       * @param user: usuario a remover
       */
  void logoutUser(User* user);

private:
  SafeMap map;

};

#endif /* SCREENCASTSERVICE_H_ */
